/*
 * Copyright (c) 2006, 2022, webrx.cn All rights reserved.
 *
 */
package cn.oop;

/**
 * <p>Project: javase2203 - Db
 * <p>Powered by webrx On 2022-07-21 09:48:35
 * <p>Created by IntelliJ IDEA
 *
 * @author webrx [webrx@126.com]
 * @version 1.0
 * @since 17
 */
public abstract class Db {

    public static int pf(int i) {
        return i * i;
    }

    //抽象方法
    public abstract void connect();

}
